Subject: Re: [PATCH net-next 2/3] netlink: specs: update rt-rule src/dst attribute types to support IPv4 addresses

From: Jakub Kicinski <[email-masked]>
Date: Wed, 29 Oct 2025 16:37:42 -0700

On Wed, 29 Oct 2025 08:22:44 +0000 Hangbin Liu wrote:
>        -
>          name: dst
> -        type: u32
> +        type: binary
> +        display-hint: ipv4
>        -
>          name: src
> -        type: u32
> +        type: binary
> +        display-hint: ipv4

This will be annoying For C / C++, and you didn't set the max len 
so I think we'll also have to malloc each time. Do we not support
display-hint for scalars?